ACTV'S Proprietary Software & Programming Capabilities Demonstrated in Scientific-Atlanta's Explorer 2000.

LOS ANGELES & NEW YORK--(BUSINESS WIRE)--Dec. 16, 1999--

ACTV, Inc. today announced that its patented HyperTV(R) and "Individualized Television" software solutions for TV/Web convergence and digital TV are being demonstrated as an integrated part of Scientific-Atlanta, Inc.'s (NYSE: SFA) Explorer(R) 2000 advanced digital set-top box at the 1999 Western Cable Show (Scientific-Atlanta Booth No. 1639).

The convention marks the first time HyperTV(R) has been showcased as a "one-screen" solution for TV/Web convergence programming. It is also the debut of ACTV's HyperTV and "Individualized Television" capabilities on the Explorer 2000.

HyperTV enables TV networks, programmers and advertisers to automatically deliver to consumers interactive Web content, Web-based advertising messages, e-commerce and community chat features that are synchronized to correspond with a live or pre-recorded TV program. Integration with the Explorer 2000, and other digital interactive platforms, will enable HyperTV's Web-based functionality to be delivered directly to TV sets. HyperTV currently offers a "two-screen" solution for TV/Web convergence, targeting the more than 20 million convergent households in the U.S. today -- people who watch TV while they surf the Web on their computer.

"This year's Western Show culminates nearly a year of work to integrate ACTV's software and interactive programming capabilities into the Explorer 2000," said Jack Miller, Scientific-Atlanta's business director of Digital Subscriber Networks. "We are excited to continue our work with ACTV as part of our CreativEdge Developers Program to develop and deliver revolutionary interactive television services to cable subscribers."

Using Scientific-Atlanta's Explorer 2000 advanced digital interactive set-top box and remote control, ACTV's "Individualized Television" software enables viewers to customize their viewing experience by seamlessly switching among multiple, real-time feeds of video, audio and data originating from the event venue. Sports viewers, for example, will be able to access isolated camera angles, in-depth statistics, instant replay on-demand, and "always on" video highlights, among many other options, all at the touch of a button on their remote control. In addition to sporting events, "Individualized Television" can enhance a variety of television genres, including music programming, news, game shows, educational children's programming, pay-per-view, advertising, and others.

The Explorer 2000 set-top has high-throughput, two-way communications and sufficient processing power, memory and graphics capable of enabling a variety of interactive applications for cable subscribers, including Internet access, video-on-demand, home shopping and IP-based applications. Scientific-Atlanta's interactive digital network is based on an open architecture that allows for an infinite number of applications and services to be added to the network without changes in network infrastructure.

To date, 18 cable operators in the U.S. and Canada have committed to deploy Scientific-Atlanta's digital interactive system. One hundred thirty-six systems have been shipped to date; 100 to customer sites and an additional 36 systems to partners and developers. Eighty-four systems have commercially launched to paying customers and more than 600,000 Explorer set-tops are in consumer homes.

HyperTV (http://www.hypertv.com) provides viewers with a richer interactive experience and allows them to become part of a dynamic virtual community, while allowing networks, programmers and advertisers to more effectively leverage the power of the Web to extend their brand identity, access lucrative e-commerce revenue streams, develop one-to-one relationships with viewers, and differentiate their programs offerings today. HyperTV also has a database capability that captures valuable permission-based marketing information.

Explorer is a registered trademark and CreativEdge is a trademark of Scientific-Atlanta, Inc. All other products or brand names are trademarks or registered trademarks of their respective owners.

Disclaimer: This news release contains forward-looking statement ads defined by the Private Securities Litigation reform Act of 1995. Forward-looking statements include statement concerning plans, objectives, goals, strategies, future events, or performance, and underlying assumptions and other statements which are other than statement of historical fact. These statements are subject to uncertainties and risks including, but not limited to, product and service demand and acceptance, change in technology, economic conditions, the impact of competition and pricing government regulation, and other risks define din this document and in statements filed from time to time with the Securities and Exchange Commission. All such forward-looking statements, whether written or oral, and whether made by or on behalf of the Company, are expressly qualified by the cautionary statements and any other cautionary statements which may accompany the forward-looking statements. In addition, the company disclaims any obligation to update any forward-looking statements to reflect events or circumstances after the date hereof.